英漢例句雙語例句At six to seven years old more than half of the children were evaluated for their sensitivity to common allergens such as dust mites, ragweed and cats.到6至7歲時(shí)，這835名兒童中，過半的人都有各種各樣的過敏癥，對常見的過敏原如塵螨，豚草和貓等產(chǎn)生過敏。Objective To compare proteins in the extract of Artemisia pollen and ragweed pollen and to examine the existance of common antigen between the two types of pollens.目的比較艾蒿花粉和豚草花粉粗浸液中的蛋白質(zhì)組分，探討兩者間有無共同抗原。common ragweed更多例句